Compare phones
| Global Score | |
| 84.1 | 85.3 |
| Basic Information | |
| Samsung | Microsoft |
| Android 11, 10 | Android 11 |
| 2020-03-23 | 2021-09-20 |
| 6.26 x 2.96 x 0.35 inches | 5.72 x 7.26 x 0.22 inches |
| 6.63 ounces | 10.02 ounces |
| Midnight blue and Raven black | Glacier and Obsidian |
| Plastic and Plastic | Glass (Corning Gorilla Glass) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 540.00 |
| Display / Screen | |
| 6.4 inches | 8.3 inches |
| 2340 x 1080 pixels | 2688 x 1892 pixels |
| Super AMOLED | AMOLED |
| 403 pixels per inch | 396 pixels per inch |
| 420 cd/m2 brightness | 800 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.4 | 8.8 |
| Performance | |
| Exynos 9611 chipset | Qualcomm Snapdragon 888 SM8350 (5 nm) chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 680, 64-bit (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 8 GB RAM |
| Mali-G72 MP3 GPU | Adreno 660 GPU |
| 9.27 | 9.63 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 11.74 | 10.1 |
| Camera | |
| 48.00 MP + 20.00 MP | 12.00 MP + 12.00 MP |
| f/2.00 aperture | f/1.70 aperture |
| 26.00mm focal length | 27.00mm focal length |
| 0.5 inches (1/2") sensor | -- |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (60 fps) (4K) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 11.55 | 10.01 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 10.6 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 4449mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 6.32 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.1 |
| GPS | GPS |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
Microsoft Surface Duo 2 has an overall score of 85.3, which is slightly better than Samsung Galaxy M21's general score of 84.1. Both of these phones include the same Android 11 OS, so you shouldn't perceive any difference regarding that. Microsoft Surface Duo 2's body is newer and notably thinner than the Samsung Galaxy M21's, but it's noticeably heavier.
The Microsoft Surface Duo 2 features a little bit better looking display than Galaxy M21, because although it has a little lower number of pixels per screen inch, it also counts with way more brightness, a bigger screen and a lot higher 1892 x 2688 resolution. The Microsoft Surface Duo 2 counts with a little bit better hardware performance than Samsung Galaxy M21, and although they both have a Octa-Core processor, the Microsoft Surface Duo 2 also has 4 GB more RAM.
The Galaxy M21 shoots much better pictures and videos than Microsoft Surface Duo 2, because although it has slower 30 frames per second video frame rate and a smaller diafragm aperture which is not so good for low light photos, and they both have the same (4K) video quality, the Galaxy M21 also counts with a way more megapixels back camera.
The Samsung Galaxy M21 has a quite bigger memory for applications and games than Microsoft Surface Duo 2, because although it has less internal storage, it also counts with an external memory slot that allows up to 512 GB. The Galaxy M21 counts with better battery life than Microsoft Surface Duo 2, because it has a 35 percent bigger battery size.
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